R help - Apr 2011 - applying uniroot function to each element in vector

If I have a vector of n elements, e.g. a vector of length 4 with elements 10,
20, 30, 40 and want to find the different values of x such that x^2=10,
x^2=20, x^30 and x^2=40, how could I do this in R? I'm thinking of using the
uniroot function, but am finding difficult applying it to a vector. Thanks

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On Apr 27, 2011, at 11:54 AM, Dale wrote:
> If I have a vector of n elements, e.g. a vector of length 4 with  
> elements 10,
> 20, 30, 40 and want to find the different values of x such that  
> x^2=10,
> x^2=20, x^30 and x^2=40, how could I do this in R? I'm thinking of  
> using the
> uniroot function, but am finding difficult applying it to a vector.  
> Thanks
I find myself scratching my head wondering why the answer is not:

y=c(10,20,30,40)
x=sqrt(y)
x
>
> --
> View this message in context:
http://r.789695.n4.nabble.com/applying-uniroot-function-to-each-element-in-vector-tp3478573p3478573.html
> Sent from the R help mailing list archive at Nabble.com.
>
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David Winsemius, MD
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